scholarly journals Joint application of radar visibility reduction and anti-radar masking technologies to protect aircraft from remote monitoring systems

2022 ◽  
Vol 24 (4) ◽  
pp. 63-71
Author(s):  
Sergey N. Razinkov ◽  
Olga E. Razinkova
Keyword(s):  
Electromagnetic Radiation ◽  
Remote Monitoring ◽  
Radiation Power ◽  
Radio Channel ◽  
Signal Transmission ◽  
Spectral Energy ◽  
Monitoring Systems ◽  
Joint Application ◽  
Probing Signal ◽  
Remote Monitoring Systems

Using spectral energy equations of transmission-reception of wave processes in radio channel with scattering on object and direct radio channel, analysis of energy ratios of information signals and active masking interference at inputs of receivers of remote monitoring systems is carried out. Measures to reduce visibility are aimed at changing the reflective signatures of objects in the interests of reducing the de-masking features contained in secondary electromagnetic radiation to limits that exclude the performance of radar monitoring tasks at established distances and time intervals. Active interference is designed to mask information signals in receiving channels of radar at power that does not allow detecting their designers by passive radar. In case of joint application of not iceability reducing devices and active jammers, radar range reducing coefficient is determined by product of coefficient characterizing possibility of autonomous masking of information signals and coefficient achievable due to reduction of secondary electromagnetic radiation power in the second degree. The laws of increase of aircraft stealth from radar observation with joint application of technologies of reduction of radar visibility and masking by intentional interference created from sides of protected objects and from assigned points have been investigated. In order to maintain the desired signal-to-noise ratio at the output of the receiver with a decrease in the duration of the probing signal, it is necessary to proportionally increase the density of the emitted energy. With given antenna sizes, the maximum signal transmission range is proportional to the root square of their cyclic carrier frequency; increase of this parameter leads to increase of partial coefficient of directional action and effective area of antenna. With a decrease in the cyclic frequency of the carrier of the probing signal, inorder to maintain the required directional properties of the antennas, it is necessary to increase their dimensions.

Remote Monitoring of Hydroprojects: Design, Installation, and Verification of Remote Monitoring Systems

1998 ◽  
Author(s):  
JOhn W. Lemons ◽  
Michael C. Vorwerk ◽  
Joe H. Carroll ◽  
William E. Jabour
Keyword(s):  
Remote Monitoring ◽  
Monitoring Systems ◽  
Remote Monitoring Systems

Remote Monitoring Systems for Detection of Contact by Unauthorized Construction Equipment and the Cathodic Protection Condition on Buried Pipelines

2004 ◽  
Author(s):  
Shozo Hatanaka ◽  
Masahiko Tange ◽  
Morio Sumiyama
Keyword(s):  
Signal Processing ◽  
Cathodic Protection ◽  
Remote Monitoring ◽  
Heavy Traffic ◽  
Construction Equipment ◽  
Monitoring Systems ◽  
Indirect Methods ◽  
Detection Systems ◽  
Transmission Pipeline ◽  
Remote Monitoring Systems

It is necessary to avoid spreading damage to the pipe when it is struck by construction equipment. It is difficult to install indirect methods (e.g. fiber optic sensors) for detection of construction equipment in heavy traffic areas. Therefore, remote monitoring systems, which can detect contact between such equipment and the steel of polyethylene-lined pipe, were developed and installed on a gas transmission pipeline (φ 600 mm, Length 9.4 km). Detection uses the change in pipe-to-earth resistance which is derived from inner pipe current and pipe to soil potential when contact occurs. Old and new data of pipe-to-earth resistance are continuously compared. If equipment contacts the steel pipe, pipe-to-earth resistance will drop below 100 Ω. The detection systems include maximal length sequence signal (pseudo-random signal) processing. This signal processing is superior for noise reduction. These systems also have remote monitoring of the cathodic protection condition (pipe to soil potential, current of coupons (probes), and transformer rectifier output voltage and current). From the office, pipeline lining and cathodic protection conditions are monitored at all times.

Compressive SensingBased Remote Monitoring Systems for IoT applications

2018 ◽  
Author(s):  
Hamza Djelouat ◽  
MOHAMED Al Disi ◽  
Abbes Amira ◽  
Faycal Bensaali
Keyword(s):  
Remote Monitoring ◽  
Monitoring Systems ◽  
Iot Applications ◽  
Remote Monitoring Systems

A Cloud Multi-Tenant Architecture for Developing Machine Remote Monitoring Systems

2015 ◽  
Vol 764-765 ◽  
pp. 775-778
Author(s):  
Shang Liang Chen ◽  
Ying Han Hsiao ◽  
Yun Yao Chen ◽  
You Chen Lin
Keyword(s):  
Data Storage ◽  
Remote Monitoring ◽  
Monitoring Systems ◽  
Cloud Data Center ◽  
Cloud Data ◽  
Storage Devices ◽  
Machine Manufacturer ◽  
Remote Monitoring Systems ◽  
Monitoring Module ◽  
Client Side

This study proposes innovative multi-tenant remote monitoring platform architecture based on cloud with an injection machine manufacturer as cloud data center. This study was designed to develop machine connection mechanism and monitoring module, etc. with machine manufacturers. Under the architecture of this study, machine manufacturers can provide virtualization technology based remote monitoring systems for manufacturing buyers to rapidly develop custom monitoring software. All data storage devices such as servers are provided by the machine manufacturer, and the client side can effectively manage injection machine data by simply renting virtual machine space.

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